I have a 2001 Accord saloon, 1.8 vtec, manual. The battery good dead over a few days if the car is not used. The battery is new and tests OK. There are no blown fuses. There is nothing switched on except the alarms which you can't switch off. A test shows there is a current leaving the battery. I have removed very fuse and accessible relay in turn and the current still runs except if you remove the 100A main fuse from the box in the engine bay. Anyone got any idea of what to do next - short of going to the dealer to invite him to mug me.

Thanks

Fred

 

I don't think your alternator is supplying enough power to give it a full charge.



have you changed the alternator yet? How many miles do you have?

 

Since you can measure a current drain (how many milliamps?) and it goes away when you pull the main fuse... The problem isn't the alternator.

England gets a different Accord, so we're really talking about a US Acura TSX.

Are there fuseboxes in BOTH ends of the dashboard? Check them both?
Does the ABS system have it's own little fusebox?

 

Hi JimBlake,
I don't have the facilties to measure the current drain, my meter only reads to 100mA and the current exceeds this. I have removed the fuses from all three boxes but I'm not aware of a box solely for the ABS. I have eliminated the Alternator and the starter motor. I am unable to eliminate the alarm as I can't find a way to isolate it.

Fred

 

If you've eliminated the alternator and the starter... then I looks like you need a new batt.

 

A bad battery would 'drain' itself without any current flowing thru the cables. You have actual current draw going on.

Over 100 mA is definitely a drain. I only asked, just in case the actual drain was 5mA (clock & stereo memory) then a bad battery would be a good possibility.

An alarm system is always a good suspect, but I don't know enough to help you with that.

You've already proven that it's 'downstream' of the 100A main fuse, so probably it's just going to be some incredibly tedious process of tracing wires. Leave the 100A fuse in, take out all the other fuses & relays, & search the car for ANY wire that's still live.

 

Hi JimBlake,

Tedious is the word. I've spent days on it now trying to find what's going on and there are some very strange things. This morning I've surrendered and booked it in to the dealer for investigation at £70 per hour plus tax - about $165 per hour.

Thanks again for your contributions and patience.

Best wishes.

Fred